When your car's Check Engine light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap.
If you experience any bleeding period after this 20 days, it will probably be the real period. This normally comes at about 4 to 6 weeks after the miscarriage.
The answer to your question varies. Your period should return within four to six weeks after your miscarriage. After that, you may find yourself expecting again right away, perhaps in the first menstrual cycle after your pregnancy loss. Or you may find it takes several cycles to get pregnant again.